In the present paper. ozone generation for a white beam line of Indus-2 is estimated theoretically. The ozone production rate. saturation concentration, ventilation rate and delay time are also estimated. The saturation concentration of ozone for the white beam line (energy dispersive X-ray diffraction beam line) BL-11 was found to be 0.965 ppm for 100 cm interaction path length and 51.45 m3 hutch volume without any ventilation. The paper presents the details of the calculations and the results.